Americans also voted Williams the fourth greatest athlete ever, ahead of names like LeBron James and Peyton Manning.

The 2015 online poll, which was conducted from September 9 to September 17, revealed Serena was most liked by Millennials and females.

The latter group ranked her the second best athlete of all time.

Though she fell just short of a calendar Grand Slam last year, Serena's career accomplishments read like a laundry list of unthinkable greatness. She has 21 Grand Slam singles titles to her name and is poised to dominate once again in 2016.